(AS) Alaska Airlines 4135 On-Time Performance Rating

Date Range:

01-Apr-2026 to 31-May-2026

(DSM) Des Moines International Airport

Des Moines, IA, US

(PHX) Phoenix Sky Harbor International Airport

Phoenix, AZ, US

On-Time Performance Chart

(using rounded numbers)

On-Time

70%

Late

20%

Very Late

Excessive

10%

Cancelled

Diverted

Delay Statistics

(Aggregate Arrival Delay Statistics for this Flight)

Total Flights Observed

Total Delays ( > 1 min )

Codeshares

Average Delay (min.)

36.75

Standard Deviation

47.1

Min

Max

107

AS 4135 On-Time Performance Details

Overall Rating

1.5 of 5

Poor

Percentage On-Time 70%

Average Delay Time 36.75 min

FlightStats Rating is a merit measurement considering both on-time performance and delay severity. The score, 1.5 shows that this flight has on-time performance characteristics better than 29% of all other flights in the FlightStats database.

On-Time Performance Rating

1.1 of 5

Poor

Percentage On-Time 70%

This flight has an on-time performance of 70%. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight is on-time more often than 21% of other flights.

Delay Performance

1.9 of 5

Average

Average Delay Time 36.75 min

This flight has an average delay of 36.75 minutes with a standard deviation of 47.1 minutes. Statistically, when taking into consideration sample size, standard deviation, and mean, this flight has delay performance characteristics better than 38% of other flights.